One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,4)(5,8)(6,7)(9,10,12,14)(11,13,15,16)(17,18,22,19)(20,23,27,25)(21,26,29,24)(28,31,32,30)(9,10)(11,13)(12,14)(15,16)(17,18,22,19)(20,25,27,23)(21,24,29,26)(28,31,32,30)(2,7)(3,8)(18,19)(20,27)(24,26)(28,32) involution — undirected(1,3,6,8)(2,4,7,5)(9,11,12,15)(10,13,14,16)(17,19,22,18)(20,25,27,23)(21,26,29,24)(28,31,32,30)(1,4,6,5)(2,3,7,8)(17,20,22,27)(18,23,19,25)(21,28,29,32)(24,30,26,31)(1,5,6,4)(2,8,7,3)(17,21)(18,24)(19,26)(20,28)(22,29)(23,30)(25,31)(27,32)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.